Water-sealed regenerator.



PATENTED JULY 11, 1905.

7 G. WALZEL. WATER SEALED REGENERATOR.

APPLICATION FILED AUG.12,1904.

22 MAT/V5555? J /XWZ //v vm/m Z UNITED STATES Patented July 11, 1905.

PATENT OFFICE.

GREGOR WALZEL, OF NEWARK, NEW JERSEY, ASSIGNOR TO EDWARD ZUSI, OF NEWARK, NEW JERSEY.

WATER-SEALED REGENERATOR.

SPECIFICATION forming part of Letters Patent No. 794,207, dated July 11, 1905 Application filed August 12, 1904. Serial No. 220,483.

1'0 all whom it may concern:

Be it known that I, GREeoR VVALZEL, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in VVater-Sealed Regenerators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying, drawings, and to numerals of reference marked thereon, which form a part of this specification.

This invention relates to improvements in regenerative furnaces for heating the gas which conveys the heat into furnaces for the reduction of lime and other materials; and the present invention is in the nature of a novel arrangement and construction of two or more water-sealed regenerative furnaces for use preferably with a system of reducing limestone of the character set forth in another application for Letters Patent filed by me August 10, 1904, Serial No. 220,186, by the introduction of preheated carbon dioXid with steam.

The principal object of my present invention is to provide a water-sealed system or device for two or more regenerative furnaces having for its purpose the removal of waste and impure gases from the regenerators when inuse and finally preventing the admission of atmospheric air into the regenerators when a mixture of carbon dioxid and steam or the like is fed into the regenerators to be brought to an increased degree of heat therein.

The invention consists, primarily, in the novel system of water sealed regenerators hereinafter more particularly specified; and, furthermore, this invention consists in the various arrangements and combinations of devices and parts, as well as in the details of the construction of the same, all of which will be described in the following specification and then finally embodied in the clauses of the claim which are appended to and form an essential part of the said specification.

The invention is illustrated in the accompanying drawings, in Which Figure 1 is a part vertical section and elevation of a pair of regenerative furnaces and the water seal connected therewith, all embod ying the features of my present invention; and Fig. 2 is a top or plan View of the same, a portion of one of the regenerators being represented as broken away and showing a portion thereof in horizontal section.

Similar characters of reference are employed in the above-described views to indicate corresponding parts.

Referring now to the said drawings, the reference character 1 indicates a pair of regenerative furnaces which are connected at the bottom by means of a pipe 2, in which are a pair of suitable valves 3 and 4:. Connected with this pipe 2 at a point between the said valves 3 and 4 is an inlet-pipe 5 for conducting carbon dioxid or other gaseous matter which is to be heated into either of the said regenerators 1, according to the relatively opened and closed conditions of the said valves 3 and t in the pipe 2. Connected with the upper portion or combustion-chamber 6 of each regenerator 1 is a pipe 7 provided with a valve 8 for conducting hot gas or gases into the regenerators, whereby they are brought to the proper degrees of heat prior to admission of the carbon dioXid into the regenerators from the pipe 5 and connecting-pipe 2.

Pipes or ducts 9 and 10 lead from the upper or combustion chamber 6 of each regenerative furnace 1, each pipe being respectively provided with the valves of shut-offs 11 and 12 and said pipes 9 and 10 meeting in a conveying duct or pipe 13, through which the heated carbon dioxid passes from either of said regenerators into a suitable reductionfurnace, preferably of the construction shown and described in another application for Letters Patent filed by myself contemporaneously herewith.

The air is fed to the combustion-chambers 6 of the regenerators 1 through an inlet-pipe 14, which connects with a pipe 15 between the said regenerators, the said pipe 15 being provided with a pair of valves 16 and 17, located, respectively, on opposite sides of the point of connection of the pipe 14 with the pipe 15.

Each regenerator 1 is provided in its top with an extension 18, formed with a duct 19 and a cap 20, each cap being closed, preferably, by means of a hinged or other suitablyconstructed gate 21. Exhaust ducts or pipes 22, each provided with a valve or closing device 23, extend from the lower portion 24: of each regenerator 1 substantially as illustrated. From an inspection of the drawings it will be seen that the ducts 19 of the extensions 18 of said regenerators have connected therewith a pipe 25, which is provided with a pair of valves or closingdevices 26 and 27, intermediate of which and connected with said pipe 25 is a pipe 28, which leads to and is connected with the. upper portion of a cylinder or reservoir 29, adapted to contain Water. The said cylinder or reservoir may be provided with a usual water-gage 30, and extending from within the said cylinder or reservoir and through the bottom of the same is a pipe 31, which terminates in a water-tank 32 or other suitable water-supply. A suitably-constructed strainer 33 may be arranged within the said tank or reservoir 29, substantially as illustrated in Fig. 1 of the drawings.

In practice gas and hot air are alternately fed into the combustion-chambers 6 of the regenerators by means of the pipes 7 and 15, the valves in all the other pipes being closed for the purpose of properly heating the said regenerators, except that the valves 23 for a time must be left open to permit of the escape of the burned gases from the regenerators through the exhaust ducts or pipes 22. After a time the valves 8 in the pipes 7 and the valves 16 and 17 are closed and valve 3 in the pipe 2 and valve 26 in the pipe 25 are opened, the valves 11 and 12 in the pipes 9 and 10 and valves 23 in the pipes 22 remaining closed. Carbon dioxid is then admitted through pipe 2 into the one regenerator until all the gases of combustion are driven from the regenerator through the duct 19, pipes 25 and 28, into and through the water seal of the tank or reservoir 29. I/Vhen the foreign gas has thus been driven ofl, the valve 26 is closed and valve 11 in the pipe 9 is opened, and the carbon dioxid, properly heated, is now conveyed from the regenerator through the pipe or duct 13 into the reduction-furnace. After a time when it becomes necessary to reheat the first-employed regenerator the second regenerator is put in use in the manner just described by closing the various valves 3 and 11, the second regenerator having previously been heated by the admission of gas through the pipe 7 and air through the pipe 15. After this second regenerator has thus been heated the valve 8 in the pipe 7 and valve 17 in the pipe 15 are closed and valve 4 in pipe 2 and valve 27 in pipe 25 are opened, the valves 11 and 12 in the pipes 9 and 10 remaining closed. Carbon dioxid is then admitted through the pipe 2 into the second regenerator until all the gases of combustion are driven from this second regenerator through its duct 19, pipes 25 and 28, into and through the water seal of the said tank or reservoir 29. When the foreign gas has thus been driven off, the valve 27 in the pipe 25 is closed and the valve 12 in the pipe 10 opened, and the heated carbon dioxid is now forced from this second regenerator directlyinto the pipe or duct 13 and into the reduction-furnace. In this manner the regenerators are used alternately, and a means of heating and supplying a continuity of carbon dioxid to the reduction-furnace is the resuit, and, furthermore, a simple and eflicient apparatus or device for the purposes of my present invention is provided which is especially adapted for use with systems and apparatus for producing carbon dioxid from limestone, but which may also be used with other processes.

I am aware that some changes may be made in the arrangements and combinations of devices and parts, as well as in the details of the construction of the same, without departing from the scope of this invention. Hence I do not limit this invention to the exact arrangements and combinations of the devices and parts as described in the foregoing specilication and as illustrated in the accompanying drawings, nor do I confine myself to the exact details of the construction of the said parts.

Having thus described my invention, what I claim is 1. The combination, with a plurality of regenerators, of a water seal, a means of communication between said water seal and regenerators, and devices in said means of communication for establishing communication of said water seal with but one of said regenerators at a time, all arranged to expel the waste gases from the active regenerator through said water seal, and providing ameans for keeping atmospheric air from entering the active regenerator during the operation of expelling the waste gases, substantially as and for the purposes set forth.

2. The combination, with a plurality of re- 3. The combination, with a plurality of regenerators, each regenerator having a tubular extension, a communicating pipe between the said extensions, a water seal, a main pipe between said water seal and said communicating pipe, and valves in said communicating pipe, located at points on opposite sides of the connection of said main pipe with said communicating pipe, all arranged to expel the waste gases from the active regenerator through said water seal, and providing a means for keeping atmospheric air from entering the active regenerator during the operation of expelling the waste gases, substantially as and for the purposes set forth.

4. The combination, with a pair of regenerators, of a pipe connecting the said regenerators, valves in said pipe, and a pipe for conducting carbon dioxid into said connectingpipe and alternately into said regenerators, a second pipe connecting said regenerators, valves in said second'pipe, and a pipe for conducting the heated carbon dioxid from said second connecting-pipe and alternately from said regenerators, means for introducing a producer-gas into said regenerators, a water seal, and a means of communication between said water seal and regenerators, all arranged to expel the waste gases from the active regenerator through said water seal, and providing a means for keeping atmospheric air from entering the active regenerator during the operation of expelling the waste gases, substantially as and for the purposes set forth. v

5. The combination, with a pair of regenerators, of a pipe connecting the said regenerators, valves in said pipe, and a pipe for conducting carbon dioxid into said connectingpipe and alternately into said regenerators, a second pipe connecting said regenerators, valves in said second pipe, and a pipe for conducting the heated carbon dioxid from said second connecting-pipe and alternately from said regenerators, means for introducing a producer-gas into said regenerators, a water seal, a means of communication between said water seal and regenerators, and devices in said means of communication for establishing communication of said water seal with but one of said regenerators at a time, all arranged to expel the waste gases from the active regenerator through said water seal, and providing a means for keeping atmospheric air from entering the active regenerator during the operation of expelling the waste gases, substantially as and for the purposes set forth.

6. The combination, with a pair of regenerators, of a pipe connecting the said regenerators, valves in said pipe, and a pipe for conducting carbon dioxid into said connectingpipe and alternately into said regenerators, a second pipe connecting said regenerators, valves in said second pipe, and a pipe for conducting the heated carbon dioxid from said second connecting-pipe and alternately from said regenerators, means for introducing a producer-gas into said regenerators, a tubular extension on each regenerator, a communicating pipe between said extensions, a water seal, and a means of communication between said Water seal and said pipe, all arranged to expel the waste gases from the active regenerator through said water seal, and providing a means for keeping atmospheric air from entering the active regenerator during the operation of expelling the waste gases, substantially as and for the purposes set forth.

7. The combination, with a pair of regenerators, of a pipe connecting the said regenerators, valves in said pipe, and a pipe for conducting carbon dioxid into said connectingpipe and alternately into said regenerators, a second pipe connecting said regenerators, valves in said second pipe, and a pipe for conducting the heated carbon dioxid from said second connecting-pipe and alternately from said regenerators, means for introducing a prod ucer-gas into said regenerators, a tubular extension on each regenerator, a communicating pipe between said extensions, a water seal, a main pipe between said water seal and said communicating pipe, and valves in said communicating pipe, located at points on opposite sides of the point of connection of said main pipe with said communicating pipe, all arranged to expel the waste gases from the active regenerator through said water seal, and providing a means for keeping atmospheric air from entering the active regenerator during the operation of expelling the waste gases, substantially as and for the purposes set forth.

8. The combination, with a pair of regenerators, of a pipe connecting the said regenerators, valves in said pipe, and a pipe for conducting carbon dioxid into said connectingpipe and alternately into said regenerators, a second pipe connecting said regenerators, valves in said second pipe, and a pipe for conducting the heated carbon dioxid from said second connecting-pipe and alternately from said regenerators, means for introducing heated air into said regenerators, awater seal, and a means of communication between said water seal and regenerators, all arranged to expel the waste gases from the active regenerator through said water seal, and providing a means for keeping atmospheric air from entering the active regenerator during the operation of expelling the waste gases, substantially as and for the purposes set forth.

9. The combination, with a pair of regenerators, of a pipe connecting the said regenerators, valves in said pipe, and a pipe for conducting carbon dioxid into said connectingpipe and alternately into said regenerators, a second pipe connecting said regenerators, valves in said second pipe, and a pipe for conducting the heated carbon dioxid from said second connecting-pipe and alternately from said regenerators, means for introducing heated air into said regenerators, a water seal, a means of communication between said water seal and regenerators, and devices in said means of communication for establishing communication of said water seal with but one of sald regenerator-s at a time, all arranged to expel the Waste gases from the active regenerator through said water seal, and providing a means for keeping atmospheric air from entering the active regenerator during the operation of expelling the waste gases, substantially as and for the purposes set forth.

10. The combination, with a pair of regenerators, of a pipe connecting the said regen erators, valves in said pipe, and a pipe for conducting carbon dioxid into said connectingpipe and alternately into said regenerators, a second pipe connecting said regenerators, valves in said second pipe, and a pipe for conducting the heated carbon dioxid from said second connecting-pipe and alternately from said regenerators, means for introducing a producergas into said regenerators, means for introducing heated air into said regenerators, a Water seal, a tubular extension on each regenerator, a communicating pipe between said extensions, and a means of communication between said water seal and said pipe, all arranged to expel the waste gases from the active regenerator through said water seal, and providing a means for keeping atmospheric air from entering the active regenerator during the operation of expelling the waste gases, substantially as and for the purposes set forth.

11. The combination, with a pair of regenerators, of a pipe connecting the-said regenerators, valves in said pipe, and a pipe for conducting carbon dioxid into said connectingpipe and alternately into said regenerators, a second pipe connecting said regenerators, valves in said second pipe, and a pipe for conducting the heated carbon dioxid from said second connecting-pipe and alternately from said regenerators, means for introducing a producergas into said regenerators, means for introducing heated air into said regenerators, a water seal, a tubular extension on each regenerator, a communicating pipe between said extensions, a main pipe between said water seal and said communicating pipe, and valves in said communicating pipe, located at points on opposite sides of the point of connection of said main pipe with said communieating pipe, all arranged to expel the waste gases from the active regenerator through said water seal, and providing a means for keeping atmospheric air from entering, the active regenerator during the operation of expelling the waste gases, substantially as and for the purposes set forth.

In testimony that I claim the invention set forth above I have hereunto set my hand this 6th day of August, 1904.

GREGOR WALZEL. 

